CID is a neurological disease believed to be caused
by prions, pathogenic agents that are smaller than
viruses, and are extremely resistant to inactivation
by heat and disinfecting agents. The incubation
period can be many years long and death is almost
certain within a year after initial onset of symptoms. What is the Main Point and What is the sub points?​

A cross between a red and a white animal would result in all of its offspring having both red and white spots.

Codominant inheritance occurs whenever a heterozygote produces both copies of a gene pair. Thus, the phenotype of the offspring combines this same phenotypes of the its parents.

The characteristic is therefore neither recessive nor dominant. Those with type AB blood serve as an example of the codominance of people. A individual who inherits both IA and IB will have form AB blood because they are codominant and would be expressed together as a result.

The crimson flower to white spots on it and the creatures with black and white jackets are two much farther examples of codominance.

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Explanation:

around 1880 and 1883

i think

If there is no skeletal system, the person will not be able to move at all or breathe.

The skeletal system not only serves as a support and lever for the movements of the body, it also serves as protection for the internal organs so that in the face of an impact it does not cause them any damage.

Also the thorax, apart from supporting all the thoracic organs and protecting them, will have a function in breathing so that they inflate while the diaphragm contracts. If all this is not done simultaneously, breathing will not be possible and this will be incompatible with life.

As for the skull, there will not be the correct separation of nerves and brain fluids and this will not be sustainable for life either, since a certain support is needed that gives the cerebrospinal fluid to the structures of the central nervous system and the intracranial pressure that also occurs.

Therefore, we can confirm that if there is no skeletal system, the person will not be able to move at all or breathe.

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Answer:

Trophic level 1 - Primary producers

Explanation:

Biomass is basically energy, and the most energy lies in the primary producers.

Answer:

If an antigen presenting cell mainly releases interleukin 2 and interleukin 4, it would expect to see further development of proinflammatory cytokines by the cells, which would trigger a response (n) it acquired

Explanation:

The antigen presenting cells phagocytose the antigen (which are generally pathogenic microorganisms) and express a molecule of said antigen on its surface presenting it to the rest of the cells, that is why they bear that name.

But this is not their only function, but they also release humoral factor to attract other cells and promote the immune and inflammatory response, and simultaneously they release anti-inflammatory cytokines to be able to repair or control the tissue damage they generate with the release of free radicals. oxygen or toxics to eliminate noxa.

In this way, the cytokines named above are considered to be the connecting bridge between the assimilation of the antigen and the formation of antibodies (activation of acquired immunity) since they are the ones that activate the lymphocyte lineage and mainly the B lymphocytes that by differentiating into plasmacysts they make specific antibodies.

The answer is "True"

Because all organisms are subject to changes in their DNA due to their own metabolism or due to the effect of the environment, regardless of the descendants from which they come. These reactions can be heritable if they occur in germ cells or disappear when the individual dies, if they occur in somatic cells.

Plants and animals are multicellular organisms made of organ systems that work together to maintain homeostasis, and the organs that are found in plants or animals are the reproductive system and the circulatory system that are present in Option A.

Both plants and animals require the ability to transport nutrients, gases, etc., which is accomplished through the circulatory system, which is responsible for distributing these substances, in animals, the circulatory system consists of the heart, blood vessels, and blood; in plants, the circulatory system consists of the xylem and phloem, and both plants and animals also have reproductive systems.

Hence, the organs that are found in plants or animals are the reproductive system and the circulatory system, which are present in Option A.

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The question is incomplete, complete question is below

A)reproductive system and the circulatory system

B)reproductive system and the nervous

C)reproductive system and the skin

Answer:

B --I H >> M transcribed

Explanation:  

Reverse genetics is a classical approach used in molecular genetics to elucidate gene function in a signaling gene network. This technique consists of producing loss of function mutations in genes of interest in order to analyze their phenotypic effects in the downstream signaling pathway.  

In this case, the mutation in B didn't affect the expression of the developmental gene M, together with the other mutant lines, this experiment indicates that B is a downstream suppressor of H (since further experiments show that B plays a role in the signaling pathway). Moreover, the mutation in the gene H affects the expression of M, thereby showing that H acts as a downstream activator of M. Finally, B-H double mutants did neither affect the expression of M, thereby showing that M transcription is dependent of the interaction between B and H.

Knowing that proteins B and H interact with each other, and they influence the expression of the M gene, we can propose the following  developmental pathway      B gene  --|  H gene >>  M gene

------------------------------

Gene pathways refer to the regulation of genes expression by turning them on and off. Many genes and proteins might be involved in this process, each of them playing significant roles in the signaling pathway.

Available data:

According to this information, we can assume that,

The developmental pathway is then as follows,

B gene  --|  H gene >>  M gene

------------------------------------

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Answer:

monera kingdom

Explanation:

Answer:

The kingdom is Monera Kingdom

Explanation:

Answer:

Folded mountains

Explanation:

it's correct

The feature of the earth's crust that is an effect of compression over a long period of time is folded mountains, which is in Option C, as the folded mountains are formed when rock layers are subjected to compression over a long period of time.

Folded mountains are formed when rock layers are subjected to compression over a long period of time. This causes the rock layers to buckle and fold, forming large, uplifted mountain ranges, and the process of folding can occur at convergent plate boundaries, where two tectonic plates are moving towards each other and causing compression in the rock layers in between them. The Himalayan mountain range, which spans several countries including India, Nepal, and China, is an example of a folded mountain range that was formed by the collision of the Indian and Eurasian tectonic plates.

As a result, the folded mountains in Option C are a feature of the earth's crust that is the result of long-term compression.

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Answer:

The altered pigmentation in transgenic petunia plants is caused by the RNA interference (RNAi) mechanism

Explanation:

The RNA interference mechanism is a naturally occurring mechanism by which single-stranded RNA molecules can bind to complementary mRNAs in order to inhibit gene expression, blocking translation and leading to mRNA degradation. The example above described is a classical genetic experiment  (Napoli et al. 1990 ) that showed the existence of the RNAi pathway by the overexpression of a chimeric chalcone synthase (CHS) gene in pigmented petunia flowers, which blocked anthocyanin biosynthesis. In this experiment, irregularly bicolored/white flowers in transgenic petunias containing exogenous pigmentation genes were developed. The co‑suppression of gene expression was produced by the high-copy-number transcription of the CHS transgene, showing the existence of an undescribed RNAi silencing mechanism. Somatic reversion of the altered phenotype can be achieved by restoring the normal mRNA levels for these pigmentation genes, e.g., by a progeny testing in order to eliminate transgenic CHS expression.

Answer:

Bacteria

Explanation:

Nitrogen fixation is the step of the nitrogen cycle that occurs with the help of microbes. Bacteria transform the nitrogen into a usable form for the plants. Thus, option a is correct.

The nitrogen cycle is the part of the biogeochemical cycle that converts nitrogen into other forms that can be used by plants. The nitrogen is converted through the nitrogen-fixing bacterias.

The nitrogen-fixing bacterias are heterotrophic in nature that lives freely in the soil. A few examples are Bacillus, Azotobacter, Clostridium, etc. These bacterias transform the atmospheric nitrogen into usable compounds called ammonia which is the fixed nitrogen and can be used by the plants.

Therefore, nitrogen-fixing bacterias transform nitrogen.

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Answer:

The correct answer would be - the ratio of phenotypes in an organism cross will tell if the genes are linked or not.

Explanation:

In this question, we perform a test cross with a fruit fly that is heterozygous If we perform a test cross between two parents with identical heterozygous genomes AaBb.

If there is no recombination found in the offspring of this cross it means there are no linkage of genes present.  And if there are new or recombinant phenotypes present it means that there are genes linked together.

Levene's discovery was a milestone in the quest for uncovering the chemistry of life. Generalizations in science are both necessary and hazardous. Phoebus A. Levene (1869–1940) was a prolific chemist, a pioneer in biochemistry, and the mentor (alas, rather autocratic) of generations of American biochemists.

Any system capable of performing activities including feeding, metabolizing, excreting, breathing, moving, growing, reproducing, and reacting to outside stimuli is considered to be life. The characteristics of life have so been listed in various ways by different thinkers. Chemist look into the characteristics of materials at the atomic and molecular level. An expert in the study of chemistry is known as a chemist (from the Greek word chm(a) alchemy, which replaced chemist from Medieval Latin alchemist). Chemists investigate how stuff is put together and how it behaves.

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Answer:

Oxygen levels stay above 15 percent starting 200 million years ago

Explanation:

Atmospheric oxygen levels are related to the evolution on Earth and changes in geochemical cycles that involve climate variations.

The presence of O 2 and evolution of oxygen gave new opportunities to the life on Earth. Oxygen levels in atmosphere have fluctuated between 15% and 35% of atmospheric volume, since the start of the Cambrian period.

So, form the starting 200 million years ago, oxygen level stay above 15 percent and the correct option is "B".

Answer:

b

Explanation:

Answer:

D

Explanation:

Got it right

Many transmembrane proteins feature as gateways to allow the transport of precise materials throughout the membrane. They frequently undergo large conformational adjustments to transport a substance thru the membrane. they may be commonly exceedingly hydrophobic and combine and precipitate in water.

Transmembrane and peripheral proteins are forms of membrane proteins present inside the cell membrane. Transmembrane proteins form channels and pores to move molecules across the membranes. in the meantime, the peripheral proteins on the extracellular surface are responsible for cellular-cell signaling and interactions.

Transmembrane proteins that amplify via the bilayer w/ part of their mass on either facet are amphipathic. -hydrophobic components (facet chains) interact with hydrophobic tails of lipids. -hydrophilic components are uncovered on both facets of the membrane.

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Answer:Nucleotide

Explanation:

Answer: B, D

Explanation: BrainEList me

Answer:

Oils and fats not have any polar part and so for them to dissolve in water they would have to break some of water s hydrogen bonds. Water will not do this so the oil is forced to stay separate from the water.

Explanation:

Answer:

Advection by ocean currents modifies phytoplankton size structure at small scales (1–10 cm) by aggregating cells in different regions of the flow depending on their size. This effect is caused by the inertia of the cells relative to the displaced fluid

Answer:

Mandel had performed simple experiments by using pea plants  having definite traits of opposite expression as Tall or Dwarf, Round seed

Explanation:

Answer:

scientific method: A method of discovering knowledge about the natural world based on making falsifiable predictions (hypotheses)

Explanation:

Opinion ko lng yan hahaha

Answer:

Explanation:

the same question  was in my book hehehe so i am telling this from my book

Drift velocity: 3.32\cdot 10^{-4}m/s

2) 5.6\cdot 10^{13} electrons per person

For a current flowing through a conductor, the drift velocity of the electrons is given by the equation:

v_d=\frac{I}{neA}

where

I is the current

n is the concentration of free electrons

e=1.6\cdot 10^{-19}C is the electron charge

A is the cross-sectional area of the wire

The cross-sectional area can be written as

A=\pi r^2

where r is the radius of the wire. So the equation becomes

In this problem, we have:

I = 8.0 A is the current

is the concentration of free electrons

d = 1.5 mm is the diameter, so the radius is

r = 1.5/2 = 0.75 mm =0.75.10^-3m

Therefore, the drift velocity is:

vd=8.0/(8.5.10^28)(1.6.10^19)π(0.75.10^-3)^2=3.32.10^-4m/s

2)The total length of the cord in this problem is

L = 3.00 m

While the cross-sectional area is

A=π ^2=π (0.75.10^-3)^2=1.77.10^-6m^2

Therefore, the volume of the cord is

V=AL(1)

The number of electrons per unit volume is n, so the total number of electrons in this cord is

N=nV=nAL=(8.5.10^28)(1.77.10^-6)(3.0)=4.5.10^23

In total, the Earth population consists of 8 billion people, which is

N^1=8.10^9

Therefore, the number of electrons that each person would get is:

N^e=N/N^1=4.5.10^23/8.10^9=5.6.10^13

hope it helps

Cholesterol type of lipid has different fundamental structural make-up from others. The correct option to this question is B.

Any of the lipids, a group of specific chemical compounds, include cholesterol. It is a lipid called a sterol. All animal cells produce cholesterol, which is a crucial structural element of animal cell membranes. It is a crystalline solid that is yellow when isolated chemically.

The primary distinction between lipids and cholesterol is that the former is a waxy substance that is a crucial part of the cell membrane, whilst the latter is one of the three fundamental components of living cells along with carbohydrates and proteins.

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Answer:

hope it helps mate

Explanation:

a) Two factors they need to keep the same in their investigation are the type of plant they are using and the amount of water and light they give each plant.

b) The factor they change is the amount of water and light they give to each plant.

To get their results, they measure the growth of each plant over a set period of time. They may also measure other factors such as the number of leaves, the height of the plant, or the color of the leaves to determine the overall health of the plant.

a) In their investigation, the students need to keep two factors the same:

1. Temperature: They must maintain a constant temperature of 25°C throughout the experiment.

2. Control substances: They need to keep the substances used in the control situation the same.

b) The factor they change is:

The students change the conditions related to the pH of the reaction mixture, the amount of yeast added, and the type of sugar used.

a) In their investigation, the students need to keep two factors the same:

1. Temperature: They must maintain a constant temperature of 25°C throughout the experiment. This ensures that any changes in the rate of fermentation are solely attributed to the variables they are testing.

2. Control substances: They need to keep the substances used in the control situation the same. This includes using 25 ml of buffer pH 7, 2 grams of sucrose, and 2 grams of yeast. Keeping these constant allows for a baseline comparison against the experimental conditions.

b) The factor they change is:

The variable being tested: The students change the conditions related to the pH of the reaction mixture, the amount of yeast added, and the type of sugar used. These variables are altered to observe their effect on the rate of fermentation.

To obtain their results, the students measure the pressure generated during the fermentation process. They use a Vernier Equipment Pressure sensor connected to a LabPro interface to record the pressure values over time.

By collecting and analyzing the pressure data, they can assess the rate of fermentation under different experimental conditions. The pressure readings indicate the gas produced as a byproduct of fermentation, providing a quantitative measure of the fermentation rate.

This allows the students to determine the optimal conditions for the new fermentation process to be used at the local bakery.

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Answer:

Cork formation is a type of secondary growth that occurs in the stems and roots of woody plants. Gum formation, on the other hand, is a type of defense mechanism that occurs in response to injury or infection.

Explanation:

Answer:

The Koppen-geiger system uses colors and shades to classify the world into five climate zones based on criteria like temperature, which allows for different vegetation growth. The Köppen climate classification system categorizes climate zones throughout the world based on local vegetation.